We’ve all done it: You plug your aches and pains into WebMD’s Symptom Checker, see that it could be either “cancer” or “seasonal allergies,” and promptly close out the window and decide to ignore ...

Correction: The original version of this article misstated the symptom checker's original launch date. WebMD, long the go-to for patients turning to the internet for an answer to mysterious symptoms, ...

How Does It Work for ITP? There is no cure for ITP. Its symptoms can vary from person to person, with some people not having any symptoms. Because ITP causes low platelets, the main side effects that ...

Nutcracker syndrome is a rare condition that happens when the vein that drains your left kidney gets squeezed between big blood vessels in your belly. It can be very painful, but it's usually not ...

Complement 3 glomerulopathy (C3G) is a rare kidney disease caused by problems in the body's complement system, which normally helps fight infections. It damages tiny filters in your kidneys called ...

WHIM syndrome is a rare genetic disease that affects your immune system and can cause frequent, potentially serious infections. Xolremdi (mavorixafor) was approved in 2024 and is the first medicine ...

Paroxysmal nocturnal hemoglobinuria (PNH) is a rare immune disease that causes your body to break down red blood cells when it should not. This disorder happens when there is a problem with certain ...

Trench foot (also called immersion foot) is a condition that happens when your feet spend a long time in a cold, wet environment. Your feet might become numb, discolored, and swollen. Trench foot can ...